/* ═══════════════════════════════════════════════════════════════════════════
   Dreamspace — Collab Shell (Vesper)
   The structural/visual shell for realtime collaboration: root container,
   floating panel chrome, room lifecycle panel, the canvas overlay layers, and
   the Collaborate button. Feature-specific styling (cursors, chat bubbles,
   avatars, reactions) lives in each owner's collab-*.css.

   Loaded ONLY when collab_enabled is on. Uses the app's theme tokens so both
   dark and light themes (var(--…), [data-theme="light"]) work automatically.
   ═══════════════════════════════════════════════════════════════════════════ */

/* Hard gate: nothing collab shows unless the body opts in (room.js sets this
   once the flag is confirmed). Also honors the [hidden] attribute everywhere. */
body:not(.collab-enabled) .collab-only { display: none !important; }
.collab-root [hidden],
.collab-panel[hidden],
#collab-reactions-layer[hidden] { display: none !important; }

/* ── Collaborate topbar button ──────────────────────────────────────────── */
#topbar-collab.collab-only {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.02em;
}
body.collab-active #topbar-collab {
  color: var(--lavender);
  box-shadow: inset 0 0 0 1px var(--border-hover), 0 0 14px -4px var(--violet);
}

/* ── Root overlay host (lives inside .canvas-area) ──────────────────────── */
.collab-root {
  position: absolute;
  inset: 0;
  z-index: 40;
  pointer-events: none; /* panels re-enable; canvas stays interactive */
}
.collab-root .collab-panel { pointer-events: auto; }

/* ── Reactions overlay — a DIRECT child of .canvas-area (NOT #canvas-wrapper),
   so it isn't double-scaled by the wrapper's transform. magical.js positions
   reactions by percentage within it. Cursors are NOT here — presence.js hosts
   its own unscaled #collab-presence-overlay. ── */
#collab-reactions-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 5;
}

/* ── Floating panel chrome (shared look for every collab section) ─────────── */
.collab-panel {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 260px;
  max-height: calc(100% - 96px);
  padding: 14px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--panel) 86%, transparent);
  border: 1px solid var(--border);
  box-shadow: 0 12px 40px -12px rgba(0, 0, 0, 0.55), inset 0 0 0 1px var(--overlay-tint);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  color: var(--text-primary);
  font-family: 'Quicksand', system-ui, sans-serif;
  animation: collab-panel-in var(--duration) var(--ease) both;
}
@keyframes collab-panel-in {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .collab-panel { animation: none; }
}

.collab-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.collab-panel-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-accent);
}
.collab-panel-close {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 8px;
  transition: color var(--duration) var(--ease), background var(--duration) var(--ease);
}
.collab-panel-close:hover { color: var(--text-primary); background: var(--overlay-hover); }

/* ── Default panel anchoring (siblings may refine in their own css) ───────── */
#collab-room-panel    { top: 16px; right: 16px; }
#collab-roster        { top: 16px; left: 16px; width: 220px; }
#collab-avatar-panel  { top: 16px; left: 16px; transform: translateY(0); margin-top: 0; }
/* chat.js builds its own .dchat chrome inside this panel, so the panel itself is
   a bare positioned box — no panel padding/background/border (avoids double chrome). */
#collab-chat-panel {
  right: 16px; bottom: 16px; width: 300px; height: 360px; max-height: calc(100% - 32px);
  padding: 0; background: transparent; border: none; box-shadow: none;
  -webkit-backdrop-filter: none; backdrop-filter: none; overflow: visible;
}
#collab-chat-panel > .dchat { width: 100%; height: 100%; }
#collab-magical-dock  { left: 16px; bottom: 16px; width: 220px; }

/* When both roster + avatar share the left rail, stack the avatar below. */
body.collab-active #collab-avatar-panel { top: auto; bottom: 16px; left: 16px; }
body.collab-active #collab-magical-dock { left: 252px; }

/* ── Inputs & buttons (shared with room/chat panels) ──────────────────────── */
.collab-input {
  width: 100%;
  box-sizing: border-box;
  padding: 9px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--overlay-tint);
  color: var(--text-primary);
  font: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}
.collab-input::placeholder { color: var(--text-secondary); }
.collab-input:focus {
  border-color: var(--border-hover);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--violet) 24%, transparent);
}

.collab-btn {
  appearance: none;
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  padding: 9px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--overlay-tint);
  color: var(--text-primary);
  transition: background var(--duration) var(--ease), border-color var(--duration) var(--ease), transform 120ms var(--ease);
}
.collab-btn:hover { background: var(--overlay-hover); border-color: var(--border-hover); }
.collab-btn:active { transform: translateY(1px); }
.collab-btn:disabled { opacity: 0.5; cursor: default; }
.collab-btn-primary {
  background: linear-gradient(135deg, var(--violet), var(--moonlight));
  border-color: transparent;
  color: #fff;
}
[data-theme="light"] .collab-btn-primary { color: #fff; }
.collab-btn-primary:hover { filter: brightness(1.08); background: linear-gradient(135deg, var(--violet), var(--moonlight)); }
.collab-btn-ghost { background: transparent; }

.collab-field-label {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

/* ── Room lifecycle panel specifics ───────────────────────────────────────── */
.collab-room-form { display: flex; flex-direction: column; gap: 8px; }
.collab-room-hint,
.collab-gate-msg {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}
.collab-login-gate { display: flex; flex-direction: column; gap: 10px; }

.collab-room-active { display: flex; flex-direction: column; gap: 10px; }
.collab-room-current {
  display: flex; flex-direction: column; gap: 2px;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--overlay-tint);
}
.collab-room-current-label { font-size: 11px; color: var(--text-secondary); letter-spacing: 0.05em; text-transform: uppercase; }
.collab-room-current-name { font-size: 15px; color: var(--text-accent); }

.collab-room-status {
  font-size: 12px;
  line-height: 1.4;
  margin: 0;
  min-height: 1em;
  color: var(--text-secondary);
}
.collab-status-ok  { color: var(--moonlight); }
.collab-status-err { color: var(--rose); }
.collab-status-pending { color: var(--text-secondary); font-style: italic; }

/* ── Roster baseline (Luna styles members in collab-presence.css) ─────────── */
/* presence.js renders its avatar stack (.collab-avatar circles) into this list. */
.collab-roster-list { list-style: none; margin: 0; padding: 0; display: flex; flex-flow: row wrap; align-items: center; gap: 6px; overflow: hidden; }
.collab-roster-count { font-size: 12px; color: var(--text-secondary); }
.collab-roster-member { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.collab-roster-avatar {
  width: 26px; height: 26px; flex: 0 0 auto;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--hover);
  font-size: 11px; font-weight: 600;
  overflow: hidden;
}
.collab-roster-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ── Chat baseline (Reverie refines in collab-chat.css) ───────────────────── */
.collab-chat-messages { flex: 1 1 auto; overflow-y: auto; display: flex; flex-direction: column; gap: 6px; font-size: 13px; }
.collab-chat-form { display: flex; gap: 6px; align-items: center; }
.collab-chat-form .collab-input { flex: 1 1 auto; }
#collab-chat-send { flex: 0 0 auto; padding: 9px 12px; }

/* ── Mobile: collapse the rail panels so the canvas stays usable ──────────── */
@media (max-width: 720px) {
  .collab-panel { width: min(86vw, 300px); }
  #collab-roster, body.collab-active #collab-avatar-panel,
  #collab-magical-dock, body.collab-active #collab-magical-dock { left: 8px; right: auto; }
  #collab-chat-panel { right: 8px; left: auto; width: min(86vw, 300px); }
  #collab-room-panel { right: 8px; top: 8px; }
}